US4592560A - Removable tool holder for a hand-held drilling device or the like - Google Patents

Removable tool holder for a hand-held drilling device or the like Download PDF

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Publication number
US4592560A
US4592560A US06/591,382 US59138284A US4592560A US 4592560 A US4592560 A US 4592560A US 59138284 A US59138284 A US 59138284A US 4592560 A US4592560 A US 4592560A
Authority
US
United States
Prior art keywords
support ring
carrier sleeve
tool holder
locking elements
sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/591,382
Other languages
English (en)
Inventor
Anton Neumaier
Werner Theissig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hilti AG
Original Assignee
Hilti AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Assigned to HILTI AKTIENGESELLSCHAFT reassignment HILTI AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: NEUMAIER, ANTON, THEISSIG, WERNER
Application granted granted Critical
Publication of US4592560A publication Critical patent/US4592560A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/1207—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
    • B23B31/123—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis with locking arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17128—Self-grasping
    • Y10T279/17136—Yielding grasping jaws
    • Y10T279/17145—Ball or roller
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17761—Side detent
    • Y10T279/17803—Rotary cam sleeve

Definitions

  • the present invention is directed to a hand-held device, such as a drilling device, a hammer drill, a screw driving device or the like, including a tool holder attachable on a rotating spindle, the tool holder includes a carrier sleeve with openings extending through the sleeve for radially displaceable locking elements.
  • a support ring laterally encircles the carrier sleeve and maintains the locking elements positioned within the openings in the carrier sleeve in corresponding recesses in the rotating spindle.
  • Hand-held devices such as drilling devices, hammer drills, screw driving devices or the like, as a rule, include a tool holder for receiving drill bits, screwdriver blades and similar tools.
  • Various coupling devices are known for connecting the tool holder with the rotating spindle in the hand-held device.
  • the tool holder is screwed onto the rotating spindle.
  • this known coupling type for instance, excessive tightening of the screw connection, the requirement for auxiliary tools for loosening the screw connection, and limited possibilities of use, since the screw connection permits rotation normally only in one working direction.
  • the tool holder is secured on the rotating spindle by roller-like locking elements which extend through openings in a carrier sleeve of the tool holder into recesses in the rotating spindle.
  • the locking elements are secured within the recesses in the spindle, the tool holder is secured against any rotation or axial displacement relative to the spindle.
  • a support ring enclosing the carrier sleeve holds the locking elements in the engaged position in the spindle.
  • the support ring To remove the tool holder from the rotating spindle, the support ring must be displaced practically for its entire axial length to achieve the disengagement of the locking elements from the spindle recesses. Since the support ring is held between two axially spaced shoulders preventing movement in the axial direction, it is necessary, using auxiliary tools to displace the support ring so that the tool holder can be removed.
  • the support ring is held in the locking position by a spring force.
  • the tool holder can be quickly replaced by displacing the support ring axially against the biasing action of the spring force and thereby permitting the disengagement of the locking elements.
  • Such an arrangement has disadvantages, however, particularly in percussion drilling operations, since the support ring may move into the unlocked position accidentally due to mass inertia of the device. Such axial displacement may occur especially when the spring is worn.
  • the axial displacement path of the support ring requires a relatively large structural length of the tool holder and tends to make the hand-held device top-heavy.
  • the primary object of the present invention is to provide a hand-held device of the type mentioned above with a tool holder which can be reliably secured on the rotating spindle and can be quickly replaced without any requirement for special tools. Further, the overall length of the tool holder can be kept small, thereby affording unrestricted use with respect to the working rotational direction.
  • a support ring is provided with a blocking or engagement element as well as with recess surfaces in its inner wall permitting the locking elements to be secured either in the locking position or in the release position.
  • the engagement and disengagement of the locking elements by rotating the support ring affords a reliable and quick acting lock for the tool holder and one which is insensitive to shocks. Axial displacement of the support ring is unnecessary, accordingly, the tool holder can be provided with a short axial length.
  • the blocking element prevents any rotation of the support ring while the rotating spindle is being operated. Further, the blocking action between the support ring and the carrier sleeve provides a connection between the support ring and the rotating spindle preventing relative rotation with the retention of the locking elements in engagement in the recesses in the rotating spindle. Accordingly, the tool holder, which has clamping jaws, can be secured without difficulty onto the rotating spindle of the hand-held device by means of the support ring.
  • the blocking element is released from engagement with the carrier sleeve and the support ring can be rotated relative to the carrier sleeve so that the locking elements are displaced into engagement with surfaces permitting the radial outward movement of the locking elements.
  • the locking elements are automatically held in the recessed surfaces in the support ring.
  • the blocking element is in the form of a locking member supported in the support ring and engageable within an opening in the carrier sleeve. It is also possible, however, in principle, to support the blocking element in the carrier sleeve so that it can engage in an opening in the support ring.
  • the engaged position can be effected by displacement from the outside or by means of a spring force. It is advisable to construct the locking member in the form of a bolt.
  • the locking member can be an adjustable set screw.
  • the adjustable set screw can be moved into and out of the engagement position by rotating the screw and it can be constructed as a standard screw or as a screw with a large knurled head for direct manual actuation.
  • To provide a relatively large displacement path for the adjusting screw with a minimal rotational path of the screw it is advisable to provide the screw with a coarse thread.
  • the end of the adjustable screw engageable within the carrier sleeve is shaped complementary to the opening in the sleeve.
  • the recessed surfaces in the support ring which engage the locking elements are contoured to provide a shoulder-shaped transition section with the inside surface of the support ring.
  • the transition surface provides a limit for rotational movement of the support ring, whereby the locking elements abut the transition surface when they are properly engaged within the recesses in the rotating spindle.
  • the position of the adjustable screw or blocking element in the support ring is aligned with the opening in the carrier sleeve so that the sleeve opening is located as a projection of the adjustable screw in the locking position of the locking elements. Accordingly, the adjustable screw can be placed in the blocking position with the locking elements in a locking position. Therefore, it is unnecessary to hunt for the locking position.
  • FIG. 1 is a side elevational view of a hammer drill mounting a tool holder
  • FIG. 2 is a cross-sectional view taken along the line II--II in FIG. 3 of the tool holder in the blocked position on a rotating spindle;
  • FIG. 3 is a transverse sectional view through the tool holder illustrated in FIG. 2 taken along the line III--III;
  • FIG. 4 is a sectional view similar to FIG. 2, however, showing the tool holder in the unblocked position with the section being taken along the line IV--IV in FIG. 5;
  • FIG. 5 is a transverse sectional view through the tool holder illustrated in FIG. 4 and taken along the line V--V in FIG. 4.
  • a hammer drill including a hand-held housing 1 with a rotating spindle 2 projecting out of the front end of the housing and with a tool holder 3, in the form of a chuck, mounted on the rotating spindle.
  • the tool holder 3 is shown separate from the housing 1, however, the rotating spindle 2, which is mounted in the housing, is shown extending into the tool holder.
  • a percussion anvil 4 or piston extends axially through the spindle 2 and is axially displaceable relative to the spindle.
  • the tool holder 3 is made up of the following parts: a carrier sleeve 5, an adjusting sleeve 6, a partly frusto-conically shaped bracing sleeve 7, clamping jaws 8, an annular spring 9, a locking sleeve 11, locking elements 12, a support ring 13, a blocking element or adjustable screw 14, and a securing disc 15.
  • Clamping jaws 8 are reliably displaceably mounted in the front end of the carrier sleeve 5.
  • the radially outer edges of the clamping jaws bear against the radially inner surface 7a of the frusto-conical part of the bracing sleeve 7 so that the jaws can be moved radially inwardly or outwardly due to the contact with the surface 7a.
  • the radial position of the clamping jaws can be adjusted for locking or releasing a tool to be held in the tool holder.
  • Axial displacement of the bracing sleeve 7 is effected by rotating the adjusting sleeve 6 relative to the carrier sleeve 5. Note that while the adjusting sleeve can be rotated about the carrier sleeve 5, it cannot be displaced axially relative to the carrier sleeve.
  • the bracing sleeve 7 Since the bracing sleeve 7 is in threaded engagement at its rear end with the outer thread 6a on the adjusting sleeve, the rotation of the adjusting sleeve effects the axial displacement of the bracing sleeve and, in turn, the radial adjustment of the clamping jaws 8.
  • teeth 11b on the inside surface of the locking sleeve are located between two annular cams, one ahead of and one behind the teeth, and mesh with teeth 13a on the radially outer surface of the support ring 13, held by the adjustable bolt 14 so that it cannot rotate relative to the carrier sleeve.
  • the teeth 13a provide a detachable catch for the locking sleeve 11 in cooperation with the inwardly directed cams on the locking sleeve.
  • Locking elements 12 are supported in windows or openings 5a extending from the inside to the outside surfaces of the carrier sleeve 5. Radially outwardly, the locking elements are engaged by the support ring 13, note FIG. 3, and engage within complementary shaped recesses 2a in the surface of the rotating spindle 2.
  • the support ring 13 has a shaped recess formed by a first surface 13b which holds the locking element 12 in the recesses 2a. At one end of each recess, the first surface 13b extends into the inside surface of the support ring via a transition surface 13c which forms a shoulder-like radial taper, note FIG. 3.
  • a second surface 13d is formed extending deeper into the support ring from its inside surface.
  • the second surface 13d extends from the first surface 13b and curves first radially outwardly and then radially inwardly until it reaches the inside surface of the support ring 13.
  • the extra depth afforded by the second surface 13d permits the locking element, when it is aligned with the second surface, to move radially outwardly.
  • Adjustable bolt 14 is positioned in the support ring 13 so that it can be rotated and displaced radially relative to the carrier sleeve 5.
  • the radially inner end of the bolt 14 has a projection 14a which can be engaged within an opening 5b in the carrier sleeve 5.
  • the adjustable bolt 14 secures the support ring 13 against rotation relative to the carrier sleeve and positions the first surfaces 13b relative to the locking elements 12 so that the locking elements are held radially inwardly within the recesses 2a in the rotating spindle. In this arrangement, the locking elements are reliably secure within the recesses 2a.
  • a working tool such as a drill bit, not shown, can be clamped in the tool holder 3 by rotating the adjusting sleeve 6 relative to the carrier sleeve 5.
  • the locking sleeve 11 For rotation of the adjusting sleeve 6, the locking sleeve 11 must be pushed forwardly so that it is disengaged from the support ring 13, as shown in FIG. 4.
  • one of the cams on the inside surface of the locking sleeves must be displaced over the teeth 13a on the outside surface of the support ring.
  • the adjusting sleeve 6 can be rotated manually by means of the locking sleeve 11.
  • the locking sleeve 11 is in meshed engagement with the adjusting sleeve 6 by means of its teeth 11a and in engagement with the teeth 6b on the adjusting sleeve. It is possible to apply a greater torque or turning moment to the adjusting sleeve by the use of a beveled ring gear key which can be supported, in a known manner, in the support ring 13 so that it is in meshed engagement with the beveled teeth 6c formed on the rear end of the adjusting sleeve 6.
  • the counter-torque transmitted to the support ring 13 during the adjusting process by means of the beveled ring gear key, not shown, is transmitted via the blocking adjustable bolt 14 to the carrier sleeve 5 and from the sleeve, via the locking elements 12, to the rotating spindle 2.
  • the adjustable bolt 14 has a function in the force transmission chain from the beveled ring gear key to the rotating spindle 2, which function is important for securely tightening the clamping jaws 8.
  • the locking sleeve 11 To remove the tool holder 3, the locking sleeve 11 must be moved into its forward position as shown in FIG. 4. In this forward position, access is available to the adjustable bolt 14.
  • the support ring By backing the projection 14a on the adjustable bolt 14 out of engagement with the opening 5b, the support ring can be rotated relative to the carrier sleeve 5.
  • the support ring 13 When the support ring 13 is rotated, the first surface 13b within the recess in the support ring is moved out of engagement with the locking elements 12 and the locking elements move into surface engagement with the surfaces 13d, note FIGS. 4 and 5.
  • the tool holder 3 can be moved from the spindle by relative movement of the tool holder and the spindle causing the locking elements 12 to seat against the second surfaces 13d. Accordingly, a rapid exchange of tool holders with different clamping devices is possible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Portable Power Tools In General (AREA)
US06/591,382 1983-03-22 1984-03-20 Removable tool holder for a hand-held drilling device or the like Expired - Fee Related US4592560A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3310371 1983-03-22
DE3310371A DE3310371A1 (de) 1983-03-22 1983-03-22 Handgeraet, wie bohrmaschine, bohrhammer, schrauber und dgl.

Publications (1)

Publication Number Publication Date
US4592560A true US4592560A (en) 1986-06-03

Family

ID=6194293

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/591,382 Expired - Fee Related US4592560A (en) 1983-03-22 1984-03-20 Removable tool holder for a hand-held drilling device or the like

Country Status (6)

Country Link
US (1) US4592560A (enrdf_load_stackoverflow)
JP (1) JPS59175961A (enrdf_load_stackoverflow)
CH (1) CH662524A5 (enrdf_load_stackoverflow)
DE (1) DE3310371A1 (enrdf_load_stackoverflow)
FR (1) FR2543036B1 (enrdf_load_stackoverflow)
NL (1) NL8400432A (enrdf_load_stackoverflow)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4824298A (en) * 1986-10-23 1989-04-25 Hilti Aktiengesellschaft Hand-held tool with detachable tool bit chuck
US4848779A (en) * 1987-04-02 1989-07-18 Black & Decker Inc. Keyless chuck
US4878679A (en) * 1987-07-01 1989-11-07 Hilti Aktiengesellschaft Variably operable hand-held device
US4891887A (en) * 1988-06-30 1990-01-09 Karl Witte Hand held drill drive
US5195760A (en) * 1990-06-12 1993-03-23 Black & Decker Inc. Keyless chuck
US5951026A (en) * 1997-12-12 1999-09-14 Black & Decker Inc. Removable chuck
US6079716A (en) * 1997-12-12 2000-06-27 Black & Decker Inc. Removable chuck
US20030066667A1 (en) * 2001-08-31 2003-04-10 Zhang Hong Lin Tool head attachment mechanism
US6551037B2 (en) * 1997-12-12 2003-04-22 Black & Decker Inc. Removable chuck
WO2003035321A3 (en) * 2001-10-26 2003-10-09 Black & Decker Inc Drilling and/or hammering tool
US6669206B2 (en) 2001-03-07 2003-12-30 Black & Decker Inc. Tool holder for a rotary hammer or chisel hammer
US20050016745A1 (en) * 2001-09-12 2005-01-27 Norbert Hahn Tool holder for hammer
US20050271489A1 (en) * 2004-06-05 2005-12-08 Gensmann Stefan D Rotary spindle for power tool and power tool incorporating such spindle
US20050285355A1 (en) * 2004-06-24 2005-12-29 Yuan-Ho Lin Quick removable chuck assembly and its cutting tool
EP1619000A1 (en) * 2001-10-26 2006-01-25 BLACK & DECKER INC. Drilling and/or hammering tool
US20060088393A1 (en) * 2004-10-26 2006-04-27 Cooper Vincent P Extended sleeve removable chuck
US20070110530A1 (en) * 2004-07-28 2007-05-17 Otto Baumann Fitting device for a machine tool with a tool holder, and a tool holder
US7717192B2 (en) 2007-11-21 2010-05-18 Black & Decker Inc. Multi-mode drill with mode collar
US7717191B2 (en) 2007-11-21 2010-05-18 Black & Decker Inc. Multi-mode hammer drill with shift lock
US7735575B2 (en) 2007-11-21 2010-06-15 Black & Decker Inc. Hammer drill with hard hammer support structure
US7762349B2 (en) 2007-11-21 2010-07-27 Black & Decker Inc. Multi-speed drill and transmission with low gear only clutch
US7770660B2 (en) 2007-11-21 2010-08-10 Black & Decker Inc. Mid-handle drill construction and assembly process
US7798245B2 (en) 2007-11-21 2010-09-21 Black & Decker Inc. Multi-mode drill with an electronic switching arrangement
US7854274B2 (en) 2007-11-21 2010-12-21 Black & Decker Inc. Multi-mode drill and transmission sub-assembly including a gear case cover supporting biasing
US20110147029A1 (en) * 2009-12-18 2011-06-23 Heiko Roehm Hand-guided power tool having a torque coupling

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DE3413581C2 (de) * 1984-04-11 1986-08-14 Günter Horst 7927 Sontheim Röhm Bohrfutter
DE3415654C2 (de) * 1984-04-27 1986-11-06 Günter Horst 7927 Sontheim Röhm Schlagbohreinrichtung
DE4010239A1 (de) * 1990-03-30 1991-10-02 Bosch Gmbh Robert Handwerkzeugmaschine mit abnehmbarer werkzeugaufnahme
JPH0568358A (ja) * 1991-09-09 1993-03-19 Satotsukusu:Kk 巻線機のガイド装置
DE102007045965A1 (de) 2007-09-25 2009-04-02 Röhm Gmbh Bohrvorrichtung mit variablem Wechselsystem
JP2010127531A (ja) * 2008-11-27 2010-06-10 Mitsubishi Electric Corp 冷凍空調装置
DE102010030825A1 (de) 2010-07-01 2012-01-05 Hilti Aktiengesellschaft Handwerkzeuggerät
DE102012216189A1 (de) 2012-09-12 2014-03-13 Hilti Aktiengesellschaft Handgeführtes Arbeitsgerät
DE102012223007A1 (de) 2012-12-13 2014-06-18 Hilti Aktiengesellschaft Handgeführtes oder halbstationäres Werkzeuggerät und Verfahren zum Betreiben eines derartigen Werkzeuggeräts
EP2868437A1 (de) 2013-10-29 2015-05-06 HILTI Aktiengesellschaft Handgeführtes oder halbstationäres Werkzeuggerät oder Arbeitsgerät

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US2991085A (en) * 1960-07-19 1961-07-04 L & L Mfg Company Cutting tool chuck
US3727432A (en) * 1970-09-30 1973-04-17 Bishop Eaves & Sons Ltd Torque-limiting clutches
US3762731A (en) * 1971-06-21 1973-10-02 M Matsumoto Chuck for tool
US4188041A (en) * 1977-05-23 1980-02-12 The Boeing Company Motor quick-change chuck system for tool having cylindrically shaped adapter portion
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Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4824298A (en) * 1986-10-23 1989-04-25 Hilti Aktiengesellschaft Hand-held tool with detachable tool bit chuck
US4848779A (en) * 1987-04-02 1989-07-18 Black & Decker Inc. Keyless chuck
US4878679A (en) * 1987-07-01 1989-11-07 Hilti Aktiengesellschaft Variably operable hand-held device
US4891887A (en) * 1988-06-30 1990-01-09 Karl Witte Hand held drill drive
US5195760A (en) * 1990-06-12 1993-03-23 Black & Decker Inc. Keyless chuck
US6079716A (en) * 1997-12-12 2000-06-27 Black & Decker Inc. Removable chuck
US6293559B1 (en) 1997-12-12 2001-09-25 Black & Decker Inc. Removable chuck
US6551037B2 (en) * 1997-12-12 2003-04-22 Black & Decker Inc. Removable chuck
US5951026A (en) * 1997-12-12 1999-09-14 Black & Decker Inc. Removable chuck
US6669206B2 (en) 2001-03-07 2003-12-30 Black & Decker Inc. Tool holder for a rotary hammer or chisel hammer
US20030066667A1 (en) * 2001-08-31 2003-04-10 Zhang Hong Lin Tool head attachment mechanism
US20050016745A1 (en) * 2001-09-12 2005-01-27 Norbert Hahn Tool holder for hammer
US7284622B2 (en) 2001-09-12 2007-10-23 Black & Decker Inc. Tool holder for hammer
EP1619000A1 (en) * 2001-10-26 2006-01-25 BLACK & DECKER INC. Drilling and/or hammering tool
WO2003035321A3 (en) * 2001-10-26 2003-10-09 Black & Decker Inc Drilling and/or hammering tool
US7743846B2 (en) 2004-06-05 2010-06-29 Black & Decker Inc. Rotary spindle for power tool and power tool incorporating such spindle
US20050271489A1 (en) * 2004-06-05 2005-12-08 Gensmann Stefan D Rotary spindle for power tool and power tool incorporating such spindle
US20050285355A1 (en) * 2004-06-24 2005-12-29 Yuan-Ho Lin Quick removable chuck assembly and its cutting tool
US7533889B2 (en) * 2004-07-28 2009-05-19 Robert Bosch Gmbh Fitting device for a machine tool with a tool holder, and a tool holder
US20070110530A1 (en) * 2004-07-28 2007-05-17 Otto Baumann Fitting device for a machine tool with a tool holder, and a tool holder
US20090044960A1 (en) * 2004-07-28 2009-02-19 Otto Baumann Method of removal of tool holder in a machine tool
US20060088393A1 (en) * 2004-10-26 2006-04-27 Cooper Vincent P Extended sleeve removable chuck
US7762349B2 (en) 2007-11-21 2010-07-27 Black & Decker Inc. Multi-speed drill and transmission with low gear only clutch
US7735575B2 (en) 2007-11-21 2010-06-15 Black & Decker Inc. Hammer drill with hard hammer support structure
US7717191B2 (en) 2007-11-21 2010-05-18 Black & Decker Inc. Multi-mode hammer drill with shift lock
US7717192B2 (en) 2007-11-21 2010-05-18 Black & Decker Inc. Multi-mode drill with mode collar
US7770660B2 (en) 2007-11-21 2010-08-10 Black & Decker Inc. Mid-handle drill construction and assembly process
US7798245B2 (en) 2007-11-21 2010-09-21 Black & Decker Inc. Multi-mode drill with an electronic switching arrangement
US7854274B2 (en) 2007-11-21 2010-12-21 Black & Decker Inc. Multi-mode drill and transmission sub-assembly including a gear case cover supporting biasing
US7987920B2 (en) 2007-11-21 2011-08-02 Black & Decker Inc. Multi-mode drill with mode collar
US8109343B2 (en) 2007-11-21 2012-02-07 Black & Decker Inc. Multi-mode drill with mode collar
US8292001B2 (en) 2007-11-21 2012-10-23 Black & Decker Inc. Multi-mode drill with an electronic switching arrangement
US20110147029A1 (en) * 2009-12-18 2011-06-23 Heiko Roehm Hand-guided power tool having a torque coupling

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CH662524A5 (de) 1987-10-15
JPS59175961A (ja) 1984-10-05
FR2543036B1 (fr) 1989-05-19
NL8400432A (nl) 1984-10-16
FR2543036A1 (fr) 1984-09-28
DE3310371A1 (de) 1984-10-11
DE3310371C2 (enrdf_load_stackoverflow) 1992-12-03

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